Change-speed driving mechanism.



vF. E. MILLER.

CHANGE SPEED DRIVING MECHANISM.

v APPLICATION FILED ocr. I3. 1913.

1,156,848. Patented Oct. 12,1915.

3 SHEETS-SHEET I- 1% 2701a. if, 6. v wl fif s.

COLUMBIA PLANOURAPH COMWASHINGTON, 11c

F. E. MILLER.

CHANGE SPEED DRIVING MECHANISM.

APPLICATION FILED OCT- '3. 19,13. 1,156,848. Patented Oct. 12, 1915.

3 SHEETS-SHEET 2 Iflflflll F. E.- MILLER.

CHANGE SPEED DRIVING MECHANISM.

APPLICATION FILED OCT-13.1913.

Patented Oct. 12, 1915.

3 SHEETS-SHEET 3.

Ill/1M I COLUMBIA PLANOGRAPH cn..wAsHlNa1'oN. n. c.

on the line 2-2, Fig. 1.

cnenen-srnnn nnrviive MECHANISM.

To all whom it may concern:

Be it known that I, FnANK EncAa MiLLEn, a citizen of the United States,'and a resident of Syracuse, in the county'of"Onon daga and State ofNew York, have invented a certain new and useful Change-Speed I Driving Mechanism, of which the following is a specification.

. My invention relates to change speed'driving mechanism and its object is to provide; a

particularly simple and highly efiicient 'or-,.

Figure 1 is a longitudinal sectional View of the mechanism as embodied in a motor cycle. Fig. 2 is a transverse sectional view Fig. 3 is a transverse sectional view on the line 3-3, Fig. 1. Fig. 4 is a transverse sectional view through the'cam ring. Fig. 5 is a front elevation of the cam ring. Fig. 6 is an end elevation of one shifting element. Fig. 7 is a corresponding view of another shifting element. Fig. 8 is a transverse sectional view of the clutch sleeve; and Fig. 9 is anend elevation of the same.

. The invention includes, generally, a main .driving element, a secondary driving element, a main driven element, asecondary driven element, a clutch for connecting and disconnecting the two driven elements, a

second clutch for connecting and disconnecting the main driven element andeither of the driving elements, a single actuating member and means operated thereby for actuating the described clutches in a pre determined order.

In the illustrated embodiment ofmy inventi on, the main driving-element comprises the engine shaft and a memb'er3j'carried therebyand provided atone end with a clutch ring 4, atits opposite end with gear teeth, constituting a sun gear 5, and axially with a tapering opening 6 for receivinga .tapering'end of the shaft 1. The ring l'is preferably formed independently of the member 3 and is provided with internal threads for engaging complemental exterthreads thereon and is furtherprovided Specification of Letters Patent.

' Patented Got. 12, 1915.

Application filed October 131913. .Seria1No.79 4,801.

atits inner end with suitable clutch face, or with clutching surfaces. The memberB' is held upon the shaft lby a nut 17 mounted upon a threaded extensionof the shaft and engaging with a shoulder at end'of the tapering opening.

, The secondary driving element is designated 9 and is illustrated as a ring journaled uponthe member 3 and providedat one end 'with a clutch fa'cef1Q, or with clutching surfaces, and atits oppositeend with axles l1 are. f,

FRANK Enea a IL-LER, orsraecusn, NEwYoRK.

the inner "carrying planetary gears 12 permanently in meshwith the sun gear 5 and with a stationannularrack 13 carried'by a barrel 14lwhichis lived to a frame member 2. r

As will be. understood, the described gearing drives the member '9 in the same dire'ction'as the'shaftl, but at a slower speed. r The main driven element is designated 15 n and" is shown as a sleeve having peripheral projections 16 forengaging 'with clutch disks 17 and having internally spaced apart longitudinally extending grooves 18 for engaglng with complemental peripheral pro jection's on an axially shiftable clutch sleeve 1.9 slidably mounted on the member '3 and sponding faces, or surfaces, of the ring 4' and member '9. T v

The secondary driven member may be of any desired form and is here illustrated as a double drum, one part 22, of which is journaled on the barrel 1 1 andpreferably con- Y stitutes a pulley for receiving a driving belt.

Theother part includes anannular wall23 having internal grooves 24 for receiving periphe'ral projections 25 on clutch disks .26 arranged alternately with the disks17. The

doubledrumalso includes an intermediate wall 27 having an axial openingfor receiv-- ing the hub 28 'of element 9, and'it further includes an outwardly extending flange 29 at the inner end of the part 22.

As will be understood, the driving member. 15 is keyed tothe disks 17 by the projections 16 and the. secondary driven member. is

keyedto the alternate disks, or rings,26 by the projections 25 so that when there is suflicient frictional contact between the respective disks, the double drum will be coupled to the part 15 v and driven directly is preferably employed for retaining the c prime '31 agaillst a'ecideiital dis lacemeiitr ,v p

p the 'clut'eh 'sle'e e.

The plate 32, which may be designated a pressure plate. is herein illustrated as a disk ha ing an axial opening smaller in diam plateel, and haying a portion of its rear face in contact with the a'cent clutch 'rmg and having a channel for receiyin g the head of one or more screws 35 whlch extend into the plate" 31 and serve to secure the two plates together and prevent relative turning meyemejnt (it. the same, while permitting thepl ate '32 to hayea limited movemea axi'a' fd'irec'tion. The plate 32 preferably within the l'lange 33 or the plate '31.

My "nye'ntioh compreliends means eperating on the actuation of a single member in one direction for shifting theclir'tch sleeve axially forfd'isengaging from one and em gaging'it witl1 the 'other of the driving members, and for releasing the cluteh between thetw'o drii' en prior to such reenga ement, andfor permitting the reengagement of -the clutch bettifeen the two driyen members after said reengageinent of In the illustrated embpdiment or in 'ention the single aetuating member is shown as ever 40 preferably pi 'o'tally connected atfll to a fixed part, a frame ,meinber 42, and haying an engagement in termedi'ate of its length tha projection extending from a ring 44 efe r'ebly provided atoneend with a hub 45 extending into the axial opening the plate 8i and provided with a ball race complelmental to race in a ring 46,, secured in an annular recess in the plate 31 at the edge of its axial pfi l a i i v v herein illustrated, the ring lh lepro- Vided with affiange 'oyerhanging the wall of the r'ing 44 from which the hub 4'5 projects. suitatle ailtin-ictien' balls 4 7, are inter dsed between the 'desdribed races.

'l'be ntea,ai 1 irg4a altered in axial a nement with shaft 1 and is pro i'ded with "two sets of ham 5 surfaces 48 429,

time being termed by spaced apart grooves in the inner annularwa'll ofthe ring, and the other by theinne'r wall of an inwardly extending flange located at the inner edge e r 'thehtibofthe ring.

Coiiperating with the cam surfaces'4'8 is shit-ting means for moving the clutch sleeve 19' axially and cooperating with the cam surfaces l9 is shifting means for moving the plate 32 against the tension of the springs 30. The cam surfaces 48, 49, are so arranged, or timed, relative to each other that they will operate on the shifting means at different periods, so that in the movement of the cam ring lein one direction about its axis the plate 32 willlbe shifted for releasing the -'clutch between the dri ing elements before any shitting nioyementis imparted to the elutch sleeve 19, and thereafter, and while the shitting means associated with the plate is l'ield against moyemen't, the clutch sleeve 19 will be shifted, and thereafter, and 7 upon the completion of the meye'ment of the clutch slee 'e, the plate 32wil be permitted to return to its initial position under the influenee of the springs '30..

A's herein illustrated, the shifting means associated with the came 48 and clut'eh sle ye .i'nciides a member disposed in axial alinement with the shaft and including a stem and head, and devices for engaging the cam surfaces -18 and the clutch sleeve, respectively. The illustrated member comprises two'parts, one including a head 50 having an axial opening, and stem 51, the bore of which forms iii/Continuation of said opening. Adjacent one end "the stem is provided with i erfiel ahd external longitudinally extend grooves 53, and adiacent its oppo- "site end the hereof th'estemi threaded. The other part the member I includes a stem 54 externally threaded for "engaging the threaded portion of the first part, and a head having a marginal rabbet, or recess, c'oii per'ating with the head 50 for providing an annular channel '55 which receives a ring '56 having radial projections 5'? extending through slots in the member 3 and into an annular channel 58, in the 'cli'itoh sleeve The ehannel 5'8 preferably provided by a rabbeted orrecessedpoii'tionof the sleeve and a ring 59- screwed into one end thereof. The outer end of the shifting member car- ;1 es a di'slror ring 60, preferably threaded thereon and provided with radial. peripheral projections "61 the hands 4&8. The head of the shifting member is guided in the bore of the member 3 and the stern portion thereof preferably is gtiide'd on a stationary stud 62 projecting inwardly from the fixed frame member 22 "and provided witl pferipheral pr iections 'enga'ging the internal grooves in the stem for preventing rotation thereof.

As shown herein, the stud is fastened to the member lQ by a screw and is preyented from rotating by peripheral p a seti'on's ei-nterl'ocking with projections 'on fthe inner face of the member 42.

Thefjs'l ran-g means assoeiated with the 'fpiate 32 and earns 49 "preferably includes a for 'coacting directly with of the plate 32.

1,156,348 I r j sleeve 66 slidably mounted on the stem of the first-named shifting member and having internal projections for engaging the external grooves in the latter for holding the a sleeve against rotation. A disk 67 is mounted on oneend of the member 66 and is provided with radial pro ect1ons 68 for engaging the cams a9, and the opposite end of the sleeve is provided with an outwardly extending flange 69 opposed to the inner face plate and flange are provided withsuitable ballraces between which antifriction balls 70 are interposed.

As will be noted, each of the axially shiftable members extends through the axial openings in the plates 31, 32 and the outer endsof said members extend within the cam ring axially thereof. A face plate 71 is provided at the outer end of the ring which fits within a rabbet, or recess, in said end and 13 provided with an ax al opening for receiving the projections 65 of the frame member 42. M r r As will be understood, the ring 44 may be oscillated through short arcs'and in reverse 7,

directions by actuating the lever 4:0 and the operation of the ring 4% in either direction through the described connections, shifts the clutch sleeve 19.

In the same movement through the described connections, the pressure plate 32 will be automatically shifted for throwing out the clutch between the two driven elements. v

It will be noted from the foregoing, that upon each complete movement in one direc tion of the cam ring 44 the shifting member associated with the clutch sleeve will be reciprocated in a single direction, and the: shifting member associated with the pres-' sure plate 32 will be reciprocated back: and

forth with an interval of rest, and that the V movement of the first-named'shifting member will occur in said interval of rest.

- I am aware of several modifications of my inventlon, but deem it unnecessary to illustrate or describe the same, since it will be understood that except as indicated by the appended claims, I do not mean to limit myseli to the particular arrangement shown and descr bed,- which has been selected for the purpose of disclosing the invention only because it isin my udgment the best embodiment thereof, of which I am now aware andpermits the same to be readily understood by those skilledin the art. 7

Whatl claim is: 7

1,. in a driving mechanlsm 1n combination, amain driving element, a secondary driving element, a main driven element and a secondary driven element, all arranged in concentric relation, a clutch for connecting the main driven element with either of the driving elements, a SeCOl1dClUtCl'l' for establishing driving connection between the .atingthe clutches, substantially as and for Opposing parts of the main drivenelement and the secondary driven element, a single actuating element and mechanism operated thereby for operthe purpose described. v2. In a driving mechanism and in combi-' nation, amain driving element, a secondary driving'eleinent, a main driven element and a secondary driven element,all arranged in concentric relation, a clutch for connecting the main driven element with either of the 'drlving elements, a second clutch for establishing a drlving connection between the driven element, a single actuating element ELHClIllBChdIllSIIl operating thereby for operlatingthe clutches, the clutches and actuatvLing element being also arranged concentric fivith' the driving and driven elements,.sub- I stantially as and for 'thepurposespecified;

3Q In a'driving-mechanism, a main driv-- ing element comprising an engine shaft and a member carried thereby and provided at one end with a clutch face and at its opposite end-with a gear, asecondary driving ele ment comprising a ring journaled on member and provided at one end with a for supporting a gear, an annular fixed rack, gear carried by said supporting means and with the gear of the first-named member, a main driven member, a clutch sleeve keyed thereto and provided at opposite ends with 'clu'tch faces complemental to the clutch faces; aforesaid, a secondary driven member, a

clutchinterposed between the same and the main driven member, and means for releasing thelast-named'clu tch and for shifting the clutch sleeve comprising a cam ring having two sets of cams, and a lever connected to the ring for turning the same about its y axis, substantially as and for the purpose described. H V

4 In a driving mechanism, 2111113111 dr1v ing element comprising an engine shaft and a member carried thereby and provided at one end with a clutch face and at its opposite end with a ear a secondar drivin b 7 v ,8

element comprising a ring ournaled on said member. and provided at one end with a clutch face and at its other end with means for supporting a gear, an annular fixed rack, a gear carried bysaid supporting means and permanently in mesh with said rack and .with the gear of the firstnamed member, a

main driven member, a clutch sleeve keyed thereto and provided at opposite ends with clutch faces complemental to the clutch main driven element and the secondary clutch face and at its other end with means 3 K permanently in mesh with said rack and a clutch interposed between the same and for sup orting a gear, an annular fixed rack,

a gearcarried by said supporting means and permanently in mesh with said'racl: and

with the gear of the first-named mei'nber, a main driven member, a clutch sleeve lreyed thereto and provided at opposite ends with clutch faces complemental to the clutch faces L I shifting member havlng means atone end aforesaid, a secondary driven member, a clutch interposed between the same and the I main driven member, and means for releasing the last-named clutch and for shifting the clutch sleeve comprising a cam ring movableabout its axis, and means for oscillating'said ring, substantially as and for the purpose set forth. v

* 6. In a driving mechanism, a maindriving element comprising an engine shaft and a member car'ied thereby and provided at one end with a clutch face and at its-other end with a gear, a secondary driving element comprising a ring journaled on said memher and provided at one end with a clutch face and atfits other end with means for supporting a gear,v an annular fixed rack, a gear carried by said supporting means and permanently in mesh with said rack and with the first-named gear, a main driven element,'a clutch sleeve keyed thereto and provided at opposite ends, with clutch faces and means at its other end for cooperating with the other set of cams, and "means for moving the cam ring, about its axis, said cams during the movement of the ring in one direction shifting the first-named shifting member in one direction only, and the second-named shifting, member in reverse directions, substantially as and for the purpose described.

7 In a driving mechanism, a main driving element comprising an engine shaft'a-nd a member carried. thereby and provided at one end with a clutch face andat its other end with a gear, a secondary driving element comprising a ring ournaled on said member and provided at one end withfa clutch face and at its other end with nieans for support ing a gear, an annular fixed rack, a gear carried by said supporting means and permanently in mesh with said rack and with the first-named gear, a main driven element, a clutch sleeve keyed thereto and provided at opposite ends with clutch faces complemental to the clutch faces aforesaid, a sec ondary driven element, a clutch interposed betweenthedriven elements, means for releasing the last-named clutch and for shifting the clutch slecvecomprising, a cam ring provided with two sets of cams, an axially movable shifting member cooperating with one set of cams and in engagement with the clutch sleeve, and a second axially movable for coi lperating with the other clntch and means at its other end'fo-r coiipera'ting with the other setof cams,and means for moving the cam ring about its axis, substantially as and for the purpose specified.

8, In a driving mechanism, main and secondary driving members, main and secondary driven members, a clutch for connecting the main diven member to either of the driving members, a second clutch for connecting the "main driven member to the secondary driven member, a single actuating member, and means for operating the clutches upon the actuation of said member including, a cam ring adapted to be oscillated and "provided with two sets of cams, an axially shiftable member having a part cooperating with one set of cams and an other part cooperating with the first-named clutch, and a second axially shiftable member h'avinga partcoacting with the other set of cams, and another part for cooperating with the second clutch, said cams during the {oscillation of the ring in one direction moving the second shifting member in reverse directions with an interval of rest, and the other shifting member in one direction dursaid interval of rest of the second shifting 'member, substantially as and for the purpose set forth.

9. In a driving mechanism and in combi nation, main and secondary driving members coaxially arranged, main'and secondary driven members, a clutch for connecting the main driven member to either of the driving members, a clutch for connecting the po's'ite ends for engaging, respectively, with one set of cams and the first-named clutch, and a second axially movable member mounted on the first-named member to move lengthwise thereof, and having means at opposite ends of the same for cooperating, re-

spectively, with the second set of cams and sleeve, a second coaxially disposed shifting means associatedwith the clutch between the driven members, an oscillating cam ring'an ranged coaxially of said sh fting means and in engagement with parts of said shifting means, and means for shifting the ring, substantially as and for the purpose specified.

,ll; In a driving mechanism, a main shaft,

clutch surfacesassociated therewith, a secondary driving element arranged coaxially of said shaft and driven therefrom and provided with clutch surfaces, coaxially arranged driven members, a clutch between the same, a clutch sleeve arranged coaxially of said shaft and provided with clutchsurvfaces complemental to the clutch surfaces aforesaid, a key connection between the sleeve and the main driven element, a shifting member arranged in alinement with, and

in advance of, said shaft,;a device carried thereby, for engaging the clutch sleeve, means for holding said member againstrotation, a second shiftinginember for controlling the first-named clutch,the second shifting member being keyed to and slidiably mounted upon the first-named shifting member, a ring arranged coaxially of said shitting members and having interior cam surfaces, deviceson the ends of said shifting members for engaging SL1Cl surfaces, and means for oscillating the ring, substantially as and for the purpose set forth.

12, In a driving mechanism and in com bination, main and secondary driving elements, main and secondary driven elements, a clutch for coupling the main driven element to either. of the driving elements, a second clutch between the driven elements, and means for controlling said clutches comprising an actuating'element, a ring movable about its axis by the actuating element and provided with two sets of interior cams, a coaxially' disposed shifting member including a stem having a bore and a head providediwith an annular channel, a fixed stud extending into said bore and having a key connection with the stem, a device held-in the annularvchannel and vengaging a meinber. of the first-named clutch, a device carried by the stem and engaging one set of cams, and a second axially shiftable member for controlling the se'condjclutch and comprising asleeve mounted on and keyed to said stem, and a device atone endof said sleeve for engaging'the second" set of cams on said ring, substantially as and forfthe purpose described. a

13.'In a drivingmechanism and in combination, main and secondary driving elements, mainand secondary driven elements, aclutch member for connecting the main driven element to eitheroi' the driving ele ments, a disk clutch interposed between the,

driven elements, controlling means therefor including a pressure plate having an axial opening, a plate carried by theisecondary driven member. and having an ax al=opening, springs interposed between the plates for pressing the first-named plate against the disk clutch, a cam ring ourna l'ed in the axial opening of the secon'd'plate, ineans for' oscillating the ring, a fixed stud extending axially of the ring, an axially movable mem ber keyed tothestud and having devices at opposite ends'ior engaging, respectively,

with the cam ring'and with the clutch member, said axially movable member extending through the openings in the two plates, a

second axially shiftable member keyed to the first-named member and having means. at

opposite ends for engaging, respectively,

with the cam ring and Jvith'the" pressure plate, and means for shifting the cam ring,

substantially as i and for} the :fpurpose *s'peci- 'fied. a

14c. In a driving mechanism, main andsecondary driving elements .main and secondary fdriven elements, a clutch member for connecting the main driven elementto either same in driving position including a springpressed pressure plate, acam ring provided of the driving elements, a clutch between the, driven elements, .meansfior holding the ioo withjtwo sets of cams, an axiallyshiftable 7 member having a head providedwith an annular channel and 'a-stem provided with nternal and external longitudinal grooves, a

device fixed to the end of the stem and ens gaging one set of cams, a device'rotatable in said annular channel and engaging said clutch member, a fixed stud extendinginto the stem and'having'a projection fo'r engag ing the intei=iorg'i-oove thereof for prevent, ing rotat on, means operated by the second set of cams for shifting the. pressure plate, I

said -means 'comprising a sleeve slidably mounted on said stem and having .a 'projec-x tion for engaging the external groove there in, a dev'iceat one endof the sleevefor en gaging the second set of cams, and means; at. the other end of thesleeve for engaging the .120 pressure plate, and an-actuating member for oscillating the cam ring,.substantiallyi'as"and for the purpose'set 'forjth.

15; In a driving mechanism, a main'drivv ing member, a secondary driving member, driven :fromthe main driv ngmember and at a difi'erent speed, saidmembers being pro-. vided respectively with clutch surfaces dis posed opposite to each other, a main driven member comprising a coaxially arranged sleeve, a clutch sleeve within the first-named sleeve and keyed thereto, said clutch sleeve being provided at opposite ends with clutch surfaces complemental to the clutch surfaces aforesaid, clutch rings keyed to said driven member, a secondary driven member, clutch ressure plate and clutch sleeve res oectivel P a i and a. member for shifting the ring, substantially as and for the purpose described,

ltiln a driving mechanism and in combination, a ma n driving element in luding an engine shaft, a member fixed thereonhaving a clutch ring at one end and a gear at its, other end, a secondary driving member including a ring journaled on the firstnamed member and having a clutch surface at one end and axles at its other end, a stationary barrel provided with an internal rack, gears carried bysaid axles andinter meshing with the rack and the first-named gear, a main driven member, a clutch sleeve keyed thereto and providedlat opposite ends with clutch surfaces complemental to the clutch surfaces of said ring and the'secondary driving-element, said sleeve also bemg provided with an internal channel, a sec ondary'driven member comprising a double drum-,one. of said drums being j'ournaled on said'fixed barrel and constituting a belt pulley, and the other. drum including an annular wall, a plate removably mounted within the outer end of the annular wall I and provided with an axial opening, a pres-' sure plate earned by the first-named plate and provided with an axial opening of smaller diameter than the opening in the first-named plate, clutch disks located in the. second drum and keyed, respectively, to the wall of said drum and the main driven element,spr1ngs interposed between the first and second platesfor pressing the second plate against the outermost clutch disk for holding the clutch disksin contactw-ith one another, a shifting device arranged in axial" alinement with the shaft and including a head provlded with an annular channel and .a hollow stem, a device held in'the. channel and engaging the clutch sleeve, a fixed stud extending into. the stemand keyed thereto, a second? shifting device arranged on the stem and keyed to the same, means at the 1nner end of the second device for engaging the pressure plate, a cam, ring arranged coaxially of the shifting devices and provided with two sets of cams, and devices on the outer ends of the respective shifting devices for engaging with said cams, and means for oscillating the ring, substantially as and for the purpose specified.

17. In a driving mechanism, main and secondary driving elements, main and secondary driven elements, a clutch member for connecting the main driven element to either of the driving elements, a clutch between the driven elements, means for holding the last-named clutch in driving position including a spring-pressed pressure plate provided with an axial opening equipped with a ball race, a cam'rin-g, meansv for shifting the same, an axially movable member operatively connected at one end to the cam ring at its other endto the clutch member, a second axially shiftable member mounted on the first and operatively connected at one end to the cam ring and provided at its other end with a ball race, and antifriction ballsinterpose'd between the same and the race of the, pressure plate, substantially as and for the purpose set forth.

1?), in a driving mechanism, main and secondary driving elements, a main driven element, a clutch member keyed thereto and shiftable for engaging either of the driving elements, a secondary driven element including an annular wall, a disk clutch having members keyed to said wall and the main driven element, respectively, a. plate secured to the annular wall at the outer end thereof and provided with an axial opening, a pressure plate carried by the first-named plate and provided with an axial opening, springs interposed between the plates for forcing the pressure plate intoengagement with the disk clutch, an actuating member, a cam ring operated thereby and provided with a hub projecting into theaxial opening in the first-named plate, an axially movable member extending through the openings in said plates and having one end projecting into the ring and cooperating with cam surfaces thereon and its other end engaging with the clutch member, means for retaining said axially movablemember against rotation, a second axially movable membermounted on the first and having a key connection therewith, the. second member projecting through the openings in said plates and having one endprojectinginto' the cam ring and cooperating with cam surfaces therein and havin its opposite end provided With a later-a extending: surface opposed to and cooperating with the inner face of the pres-- sure plate, substantially as and for the purpose described;

19-. In a driving-1 mechanism, main and secondary drlvmg elements, a mam driven elemenfla clutch member keyed thereto and shiftable for engaging either of the driv-V ing elements, a secondary driven element" comprising a drum constituting abelt pulley and an annular wall, a disk clutch having members keyed to said wall and the main driven element, respectively, a plate secured to the annular wall at the outer end thereof and provided with an axial opening equipped with a ball race, a pressure plate carried by the first-named plate and pro- 7 vided with any axial ooenin s rin s interfirst-named plate and provided with a complemental ball race, antifricti-on balls located between said ball races, an axially movable member extending through the openings in said plates and having one end pro-' cetmg into the ring and cooperating-w th cam surfaces therein and its other end engaging with the clutch member, means for retaining said' axially movable memberagainst rotation, a second axially movable member mounted on the first and l key connection therewith, the sec ond member projecting through the open ings in said plates and having one end prohaving a jecting into the cam ring and cooperating with cam surfaces therein and having its opposite end provided with a laterally ex- 7 tending surface. opposed to and cooperating with the inner face of the pressure plate,

and for "the purpose substantially as specified.

20. In a driving mechanism, main and secondary driving-elements, main and secondary driven elements, a clutch member for connecting the main driven element to either of the driving elements, a clutch between the driven elements, an axially movable shifting member associated with each of the clutches, said members being keyed to each other, a fixed frame member having interlocking projections on one face thereof, a stud secured to said face of the'fixed frame member and provided with interlocking projections engaging the first-named interlocking projections, means on the stud for preventing rotation of one of said axially shiftable members, a cam ring arrangedcoaxially of said shiftable members and stud and having at one end an inwardly extending flange having its inner face provided with cam surfaces for coacting with one of said axially shiftable members, said ring also having an internal groove with walls providing other cam surfaces for coactingwith the other axially shiftable member, a plate closing the outer end of the ring and provided with an axial opening for receiving the interlocking projections on the fixed frame member, a lever pivotally connected to the" fixed frame member, and an abutment on theicam ring engaging said lever, substantially as and for the purpose set forth.

21.-In a driving mechanism and in combinatiom-zmain and secondary driving ele-' ments, main and secondary driven elements,

pockets, springs in companion pockets for pressing the: second plate'against the disk clutch, said platesbeingprovided with axial openings, one of smaller diameter than the other, axially movable, clutch operating members extending through the openings in said plates, one of said members engaging the clutch member and'the other the pres! sure plate, a cam ring arranged coaxlally of said axially movable'inembers and provided with two sets of cams, one set cooperating with one of said members and the other set with-the'other of said members, and means 1 for oscillating said ring, substantially and for; the purpose described.

22. In a dr ving mechanism, a main driving element, a 'seccndary'driving elementy main and secondary driven elements, a

clutch between the driven elements, a clutch member associated with f-the. main drivenv element for connecting the same to either of the driving elements, acain ring arranged in axial alinement with the main driving element and provided with two sets of internal cams, a lever for oscillating the cam ring, and two axially'movable shifting members having means at corresponding ends extending into the cam ringand cooperatingwith the camsthereof, and means at their opposite ends for cooperating with the clutch member andthe clutch between the,

clriven members, substantially as and for the purpose specified.

23. In a driving mechanism, a main driving element, comprising an engine shaft and a member carried thereby, provided at one end with a clutch face and at its opposite end with a gear, a secondary driving element comprising a ring journaled on'saidcomplemental to the clutch faces of the driving members, and means for shifting the clutch sleeve and releasing the clutch between the driven elements comprising a cam ring provided with two. sets of cams, an axially movable member having means at one end for engaging one set of cams and means at its other endfor engaging the clutch sleeve, and a second axially movable mem-,

ber keyed to the first and provided at one endwith means for cooperating with the other set of cams and at its other end with means for eflecting the release of the clutch, between the driven members, substantially as and for the purpose set forth.

24 in a driving mechanism, coaxially are ranged driving members, coaXially arranged driven-members, a clutch sleeve arranged within the main, driven member and keyed thereto and;having means at opposite ends for. engaging the respective driving members, a clutch between the driven members, axially movable shifting members arranged 1 in axial alinementwith and movable toward .and from the main drlving member, means the outer end of the latter, and means for oscillating the cam r1ng,'substant1ally as and for the purpose described.

25. In a drlvlng mechanism and 1n combination, a main driving member including a sun gear and a clutch face, a second driv- ,ing member arranged coaxially of the main driving member and including planetary gears in mesh with the sun gear and a sec,- ond clutch, face, a fixed annular rack in engagement with the planetary gears, a part to be driven, and a clutch member keyed to said part and-having clutch faces complemental to the aforesaid clutch faces, and means for shifting said member, substantially as and forthe purpose specified.

2,6. In a driving mechanism and in combination, a drum, eoaxially. disposed driving members including an element provided with a sun gear and with a clutch face and a second element provided with planetary gears in mesh with said sun gear, and also provided with a clutch face, an annular rack in engagement with the planetary gears, a, member arranged coaxially of the drum, friction clutch means between said member and' the drum, a clutch sleeve arranged coaXially of the drum and provided with clutch faces complemental to the aforesaid clutch faces, a nd means for shifting the clutch, sleeve, substantially as and for the purpose set forth.

27. In a driving mechanismand in combination, a drum, coaXially disposed driving members including an element provided with, asun gear and with a clutch face and a second element provided with planetary gears'in mesh with said sun gear, and also proiided with a clutch face, an annular rack in engagement with the planetary gears, a member arranged coaXially of the drum, friction clutch means between said member and the drum, a clutch sleeve arranged coaXially of the drum and provided with clutch faces complemental to the aforesaid clutch faces, and means for shifting the clutch sleeve, said means including .a sliding 'member arranged axially of the drum and an oscillatory member arranged coaXially of the sliding. member, substantially as and for the purpose described.

In testimony whereof, I have hereunto signed my name in the presence of two at testing witnesses, at Syracuse, in the county of Onondaga, in the State of New York, this 24th day of September, 1913.

FRANK EDGAR MILLER.

Witnesses:

- 5. DAVIS,

F. B. PIcKAn Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G.

It is hereby certified that in Letters Patent No. 1,156,848, granted October 12,

1915, upon the application of Frank Edgar Miller, of Syracuse, New York, for an improvement in Change-Speed Driving Mechanism, errors appear in the printed specification requiring correction as follows: Page 2, following line 16, insert the syllables and Words eter than the corresponding opening in; page 6, line 86, claim 17 after the word ring insert the Word and; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 2nd day of November, A. D., 1915.

R. F. WHITEHEAD,

Acting Gammissioner of Patents.

[SEAL] 

